Environmentally friendly biodegradable BB pellet and manufacturing method thereof

Abstract

A biodegradable BB pellet includes an organic material and an inorganic material. Therein, the organic material includes a main ingredient polybutylene-1,4-succinate, while the inorganic material is selected from pulvis talci powder, calcium carbonate, barium sulfate, mica powder, and zinc powder. The manufacturing method of the present invention is mixing the organic material and the inorganic material into a mixture, and processing the mixture orderly through injection molding, grinding, waxing and polishing. Thereby, the present invention is degradable by the environment and prevented from polluting environment. Also, due to the properties of better toughness, flexibility, and higher heat tolerance, the present invention is prevented from bursting to hurt other people and deforming during long-distance transportation.

What is claimed is: 
     
       1. An environmentally friendly biodegradable BB pellet, comprising:
 an organic material including a main ingredient and a secondary ingredient, wherein the main ingredient is polybutylene-1,4-succinate (PBS) and the secondary ingredient includes poly lactic acid (PLA) and polybutylene adipate-co-terephthalate (PBAT); and 
 an inorganic material. 
 
     
     
       2. The environmentally friendly biodegradable BB pellet of  claim 1 , wherein the organic material is present in an amount of 15 wt %-51 wt % and the inorganic material is present in an amount of 49 wt %-85 wt % based on the total weight of the BB pellet. 
     
     
       3. The environmentally friendly biodegradable BB pellet of  claim 1 , wherein the secondary ingredient comprises a compatibilizer, and a coupling agent. 
     
     
       4. The environmentally friendly biodegradable BB pellet of  claim 3 , wherein the compatibilizer is selected from the group consisting of polyethylene glycol (PEG), polypropylene glycol (PPG), and glycerol. 
     
     
       5. The environmentally friendly biodegradable BB pellet of  claim 3 , wherein the coupling agent is selected from monoalkoxy titanium series compounds. 
     
     
       6. The environmentally friendly biodegradable BB pellet of  claim 1 , wherein the main ingredient is present in an amount of 70 wt %-100 wt % and the secondary ingredient is present in an amount of 0 wt %-30 wt %, based on the total weight of the organic material. 
     
     
       7. The environmentally friendly biodegradable BB pellet of  claim 1 , wherein the poly lactic acid (PLA) is present in an amount of 0 wt %-20 wt % based on the total weight of the organic material. 
     
     
       8. The environmentally friendly biodegradable BB pellet of  claim 1 , wherein the inorganic material is selected from the group consisting of pulvis talci powder, calcium carbonate, barium sulfate, mica powder, and zinc powder. 
     
     
       9. The environmentally friendly biodegradable BB pellet of  claim 1 , wherein the organic material and the inorganic material are mixed into a mixture, and the mixture is processed through injection molding. 
     
     
       10. The environmentally friendly biodegradable BB pellet of  claim 9 , wherein the temperature for the mixture to be injection molded is about 160-190 degree Celsius. 
     
     
       11. The environmentally friendly biodegradable BB pellet of  claim 9 , wherein the mixture is processed through grinding and polishing. 
     
     
       12. The environmentally friendly biodegradable BB pellet of  claim 11 , wherein the temperature of cooling water needed during the grinding process is about 15-25 degree Celsius. 
     
     
       13. The environmentally friendly biodegradable BB pellet of  claim 9 , wherein the mixture is processed through waxing.